public static Bitmap RsBlur(Context context, Bitmap source, int radius)
{
Bitmap inputBmp = source;
//(1)
RenderScript renderScript = RenderScript.Create(context);
// Allocate memory for Renderscript to work with
//(2)
Allocation input = Allocation.CreateFromBitmap(renderScript, inputBmp);
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
//(3)
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur scriptIntrinsicBlur = ScriptIntrinsicBlur
.Create(renderScript, Element.U8_4(renderScript));
//(4)
scriptIntrinsicBlur.SetInput(input);
//(5)
// Set the blur radius
scriptIntrinsicBlur.SetRadius(radius);
//(6)
// Start the ScriptIntrinisicBlur
scriptIntrinsicBlur.ForEach(output);
//(7)
// Copy the output to the blurred bitmap
output.CopyTo(inputBmp);
//(8)
renderScript.Destroy();
return(inputBmp);
}
public Bitmap Transform(Bitmap source)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = Bitmap.CreateBitmap(source);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(m_Rs, source, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(m_Rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(m_Rs, Element.U8_4(m_Rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(m_BlurRadius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
if (blurredBitmap != source)
{
source.Recycle();
}
return(blurredBitmap);
}
public bool Prepare(Context context, Bitmap buffer, float radius)
{
if (_mRenderScript == null)
{
try
{
_mRenderScript = RenderScript.Create(context);
_mBlurScript = ScriptIntrinsicBlur.Create(_mRenderScript, Element.U8_4(_mRenderScript));
}
catch (Android.Renderscripts.RSRuntimeException e)
{
if (DEBUG)
{
throw e;
}
else
{
// In release mode, just ignore
Release();
return(false);
}
}
}
_mBlurScript.SetRadius(radius);
_mBlurInput = Allocation.CreateFromBitmap(
_mRenderScript,
buffer,
Allocation.MipmapControl.MipmapNone,
AllocationUsage.Script);
_mBlurOutput = Allocation.CreateTyped(_mRenderScript, _mBlurInput.Type);
return(true);
}
public Bitmap Blur(Bitmap bitmap, float blurRadius)
{
// Allocation will use the same backing array of pixels as bitmap if created with USAGE_SHARED flag
using (var inAllocation = Allocation.CreateFromBitmap(_renderScript, bitmap)) {
if (!CanReuseAllocation(bitmap))
{
if (_outAllocation != null)
{
_outAllocation.Destroy();
_outAllocation.Dispose();
}
_outAllocation = Allocation.CreateTyped(_renderScript, inAllocation.Type);
_lastBitmapWidth = bitmap.Width;
_lastBitmapHeight = bitmap.Height;
}
_blurScript.SetRadius(blurRadius);
_blurScript.SetInput(inAllocation);
// Do not use inAllocation in forEach, it will caue visual artifacts on blurred bitmap
_blurScript.ForEach(_outAllocation);
_outAllocation.CopyTo(bitmap);
inAllocation.Destroy();
}
return(bitmap);
}
private Bitmap CreateBlurredImage(int radius, Bitmap originalBitmap)
{
// Load a clean bitmap and work from that.
//** Asi estaba antes Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(this);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
//Retrieves a blurred image
public static Drawable Difuminar(Drawable papelTapiz, short blurRadius)
{
Bitmap originalBitmap = ((BitmapDrawable)papelTapiz).Bitmap;
Bitmap blurredBitmap = Bitmap.CreateScaledBitmap(originalBitmap, originalBitmap.Width, originalBitmap.Height, false);
RenderScript rs = RenderScript.Create(Application.Context);
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
if (blurRadius < maxRadius)
{
script.SetRadius(blurRadius);
}
script.ForEach(output);
output.CopyTo(blurredBitmap);
Drawable papelTapizDifuminado = new BitmapDrawable(Android.Content.Res.Resources.System, blurredBitmap);
originalBitmap.Recycle();
originalBitmap.Dispose();
blurredBitmap.Recycle();
blurredBitmap.Dispose();
input.Dispose();
output.Dispose();
return(papelTapizDifuminado);
}
private Bitmap CreateResizedImage(Bitmap originalBitmap)
{
int width = Convert.ToInt32(Math.Round(originalBitmap.Width * BITMAP_SCALE));
int height = Convert.ToInt32(Math.Round(originalBitmap.Height * BITMAP_SCALE));
// Create another bitmap that will hold the results of the filter.
Bitmap inputBitmap = Bitmap.CreateScaledBitmap(originalBitmap, width, height, false);
Bitmap outputBitmap = Bitmap.CreateBitmap(inputBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(Context);
Allocation tmpIn = Allocation.CreateFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(rs, outputBitmap);
// Allocate memory for Renderscript to work with
var t = Android.Renderscripts.Type.CreateXY(rs, tmpIn.Element, Convert.ToInt32(width * RESIZE_SCALE), Convert.ToInt32(height * RESIZE_SCALE));
Allocation tmpScratch = Allocation.CreateTyped(rs, t);
ScriptIntrinsicResize theIntrinsic = ScriptIntrinsicResize.Create(rs);
// Resize the original img down.
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach_bicubic(tmpScratch);
// Resize smaller img up.
theIntrinsic.SetInput(tmpScratch);
theIntrinsic.ForEach_bicubic(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
private Bitmap CreateBlurredImage(Bitmap originalBitmap, int radius)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(Context);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start Renderscript working.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
public Bitmap BlurImage(Bitmap image)
{
if (image == null)
return null;
image = RGB565toARGB888(image);
if (!configured)
{
input = Allocation.CreateFromBitmap(rs, image);
output = Allocation.CreateTyped(rs, input.Type);
script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetRadius(BLUR_RADIUS);
configured = true;
}
else
{
input.CopyFrom(image);
}
script.SetInput(input);
script.ForEach(output);
output.CopyTo(image);
return image;
}
private Bitmap FastBlur(Bitmap sentBitmap)
{
try
{
if (null == sentBitmap)
{
return(null);
}
Bitmap outputBitmap = Bitmap.CreateBitmap(sentBitmap);
RenderScript renderScript = RenderScript.Create(ActivityContext);
Allocation tmpIn = Allocation.CreateFromBitmap(renderScript, sentBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(renderScript, outputBitmap);
//Intrinsic Gausian blur filter
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
theIntrinsic.SetRadius(AppSettings.BlurRadiusComment);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
catch (Exception e)
{
Console.WriteLine(e);
return(null);
}
}
public Bitmap Transform(Bitmap source)
{
// Load a clean bitmap and work from that.
var originalBitmap = source;
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = null;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
var rs = RenderScript.Create(Context);
// Allocate memory for Renderscript to work with
var input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull,
AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(Radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
source.Recycle();
return(blurredBitmap);
}
public static Drawable CreateBlurredImageFromBitmap(Bitmap bm, Context context, int size)
{
var rs = RenderScript.Create(context);
var options = new BitmapFactory.Options
{
InSampleSize = size
};
byte[] imageInBytes;
using (var stream = new MemoryStream())
{
bm.Compress(Bitmap.CompressFormat.Jpeg, 100, stream);
imageInBytes = stream.ToArray();
}
var blurred = BitmapFactory.DecodeByteArray(imageInBytes, 0, imageInBytes.Length);
var input = Allocation.CreateFromBitmap(rs, blurred);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetRadius(8f);
script.SetInput(input);
script.ForEach(output);
output.CopyTo(blurred);
return(new BitmapDrawable(context.Resources, blurred));
}
public override Bitmap Operations(Bitmap source, Bitmap result)
{
Bitmap originalBitmap = source;
Bitmap blurredBitmap = null;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
var rs = RenderScript.Create(mContext);
var input = Allocation.CreateFromBitmap(rs, originalBitmap,
Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
script.SetRadius(mRadius);
script.ForEach(output);
output.CopyTo(blurredBitmap);
source.Recycle();
return(blurredBitmap);
}
private Bitmap Blur()
{
//Now I am letting the user to risk by letting them to choose to blur the image when the device runs android 10 and beyond
if (new ConfigurationManager(AppPreferences.Default).RetrieveAValue(ConfigurationParameters.BlurEnabledForAndroid10) == false)
{
//Workaround Android Q: IT causes SIGSEV in Android 10 for some reason. XOM related maybe
if (Build.VERSION.SdkInt >= BuildVersionCodes.Q)
{
return(image);
}
}
if (image == null)
{
return(image);
}
if (intensity == 0)
{
return(image); //No need to blur the image.
}
Bitmap input;
if (image.Width > deviceWidth || image.Height > deviceHeight)
{
input = Bitmap.CreateScaledBitmap(image, deviceWidth, deviceHeight, false);
}
else
{
input = Bitmap.CreateScaledBitmap(image, deviceWidth, deviceHeight, true);
}
try
{
Bitmap output = Bitmap.CreateBitmap(input);
RenderScript rs = RenderScript.Create(context);
ScriptIntrinsicBlur intrinsicBlur = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
Allocation inputallocation = Allocation.CreateFromBitmap(rs, input);
Allocation outputallocation = Allocation.CreateFromBitmap(rs, output);
intrinsicBlur.SetRadius(intensity);
intrinsicBlur.SetInput(inputallocation);
intrinsicBlur.ForEach(outputallocation);
outputallocation.CopyTo(output);
return(output);
}
catch
{
return(input);
}
}
/// <summary>
/// Converts YUV_420_888 raw data to RGB bitmap.
/// </summary>
/// <returns>The RGB bitmap.</returns>
/// <param name="y">Y</param>
/// <param name="u">U</param>
/// <param name="v">V</param>
/// <param name="width">Width</param>
/// <param name="height">Height</param>
/// <param name="yRowStride">Y row stride (we know from documentation that PixelStride is 1 for y).</param>
/// <param name="uvRowStride">UV row stride (we know from documentation that RowStride is the same for u and v).</param>
/// <param name="uvPixelStride">Uv pixel stride (we know from documentation that PixelStride is the same for u and v).</param>
public Bitmap Yuv420888ToRgb(byte[] y, byte[] u, byte[] v, int width, int height, int yRowStride, int uvRowStride, int uvPixelStride)
{
// rs creation just for demo. Create rs just once in onCreate and use it again.
//RenderScript rs = (activity as MainActivity).RenderScript; // RenderScript.create(this);
RenderScript rs = RenderScript.Create(Android.App.Application.Context);
//RenderScript rs = MainActivity.rs;
ScriptC_yuv420888 mYuv420 = new ScriptC_yuv420888(rs);
// Y,U,V are defined as global allocations, the out-Allocation is the Bitmap.
// Note also that uAlloc and vAlloc are 1-dimensional while yAlloc is 2-dimensional.
RType.Builder typeUcharY = new RType.Builder(rs, Element.U8(rs));
typeUcharY.SetX(yRowStride).SetY(height);
Allocation yAlloc = Allocation.CreateTyped(rs, typeUcharY.Create());
yAlloc.CopyFrom(y);
mYuv420.Set_ypsIn(yAlloc);
RType.Builder typeUcharUV = new RType.Builder(rs, Element.U8(rs));
// note that the size of the u's and v's are as follows:
// ( (width/2)*PixelStride + padding ) * (height/2)
// = (RowStride ) * (height/2)
// but I noted that on the S7 it is 1 less...
typeUcharUV.SetX(u.Length);
Allocation uAlloc = Allocation.CreateTyped(rs, typeUcharUV.Create());
uAlloc.CopyFrom(u);
mYuv420.Set_uIn(uAlloc);
Allocation vAlloc = Allocation.CreateTyped(rs, typeUcharUV.Create());
vAlloc.CopyFrom(v);
mYuv420.Set_vIn(vAlloc);
// handover parameters
mYuv420.Set_picWidth(width);
mYuv420.Set_uvRowStride(uvRowStride);
mYuv420.Set_uvPixelStride(uvPixelStride);
Bitmap outBitmap = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888);
Allocation outAlloc = Allocation.CreateFromBitmap(rs, outBitmap, Allocation.MipmapControl.MipmapNone, Allocation.UsageScript);
Script.LaunchOptions lo = new Script.LaunchOptions();
lo.SetX(0, width); // by this we ignore the y’s padding zone, i.e. the right side of x between width and yRowStride
lo.SetY(0, height);
mYuv420.ForEach_doConvert(outAlloc, lo);
outAlloc.CopyTo(outBitmap);
return(outBitmap);
}
protected bool Prepare()
{
var width = _mBlurredView.Width;
var height = _mBlurredView.Height;
if (_mBlurringCanvas != null && !_mDownsampleFactorChanged && _mBlurredViewWidth == width &&
_mBlurredViewHeight == height)
{
return(true);
}
_mDownsampleFactorChanged = false;
_mBlurredViewWidth = width;
_mBlurredViewHeight = height;
var scaledWidth = width / _mDownsampleFactor;
var scaledHeight = height / _mDownsampleFactor;
// The following manipulation is to avoid some RenderScript artifacts at the edge.
scaledWidth = scaledWidth - scaledWidth % 4 + 4;
scaledHeight = scaledHeight - scaledHeight % 4 + 4;
if (_mBlurredBitmap == null ||
_mBlurredBitmap.Width != scaledWidth ||
_mBlurredBitmap.Height != scaledHeight)
{
_mBitmapToBlur = Bitmap.CreateBitmap(scaledWidth, scaledHeight,
Bitmap.Config.Argb8888);
if (_mBitmapToBlur == null)
{
return(false);
}
_mBlurredBitmap = Bitmap.CreateBitmap(scaledWidth, scaledHeight,
Bitmap.Config.Argb8888);
if (_mBlurredBitmap == null)
{
return(false);
}
}
_mBlurringCanvas = new Canvas(_mBitmapToBlur);
_mBlurringCanvas.Scale(1f / _mDownsampleFactor, 1f / _mDownsampleFactor);
_mBlurInput = Allocation.CreateFromBitmap(_mRenderScript, _mBitmapToBlur,
Allocation.MipmapControl.MipmapNone, AllocationUsage.Script);
_mBlurOutput = Allocation.CreateTyped(_mRenderScript, _mBlurInput.Type);
return(true);
}
public static void BlurBitmapWithRenderscript(RenderScript rs, Bitmap bitmap2)
{
// this will blur the bitmapOriginal with a radius of 25
// and save it in bitmapOriginal
// use this constructor for best performance, because it uses
// USAGE_SHARED mode which reuses memory
Allocation input = Allocation.CreateFromBitmap(rs, bitmap2);
Allocation output = Allocation.CreateTyped(rs, input.Type);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
// must be >0 and <= 25
script.SetRadius(25f);
script.SetInput(input);
script.ForEach(output);
output.CopyTo(bitmap2);
}
protected bool prepare()
{
int width = mBlurredView.Width;
int height = mBlurredView.Height;
if (mBlurringCanvas == null || mDownsampleFactorChanged ||
mBlurredViewWidth != width || mBlurredViewHeight != height)
{
mDownsampleFactorChanged = false;
mBlurredViewWidth = width;
mBlurredViewHeight = height;
int scaledWidth = width / mDownsampleFactor;
int scaledHeight = height / mDownsampleFactor;
// The following manipulation is to avoid some RenderScript artifacts at the edge.
scaledWidth = scaledWidth - scaledWidth % 4 + 4;
scaledHeight = scaledHeight - scaledHeight % 4 + 4;
if (mBlurredBitmap == null ||
mBlurredBitmap.Width != scaledWidth ||
mBlurredBitmap.Height != scaledHeight)
{
mBitmapToBlur = Bitmap.CreateBitmap(scaledWidth, scaledHeight,
Bitmap.Config.Argb8888);
if (mBitmapToBlur == null)
{
return(false);
}
mBlurredBitmap = Bitmap.CreateBitmap(scaledWidth, scaledHeight,
Bitmap.Config.Argb8888);
if (mBlurredBitmap == null)
{
return(false);
}
}
mBlurringCanvas = new Canvas(mBitmapToBlur);
mBlurringCanvas.Scale(1f / mDownsampleFactor, 1f / mDownsampleFactor);
mBlurInput = Allocation.CreateFromBitmap(mRenderScript, mBitmapToBlur,
Allocation.MipmapControl.MipmapNone, AllocationUsage.Script);
mBlurOutput = Allocation.CreateTyped(mRenderScript, mBlurInput.Type);
}
return(true);
}
public static Bitmap Blur(Bitmap BMap, float Radius)
{
Bitmap MutableBMap = BMap.Copy(Bitmap.Config.Argb8888, true);
RenderScript RS = RenderScript.Create(Application.Context);
Allocation Input = Allocation.CreateFromBitmap(RS, MutableBMap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation Output = Allocation.CreateTyped(RS, Input.Type);
ScriptIntrinsicBlur Script = ScriptIntrinsicBlur.Create(RS, Element.U8_4(RS));
Script.SetInput(Input);
Script.SetRadius(20);
Script.ForEach(Output);
Output.CopyTo(MutableBMap);
return(MutableBMap);
}
Bitmap CreateBlurredImage(int radius)
{
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.imagebackground);
Bitmap blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
Allocation input = Allocation.CreateFromBitmap(renderScript, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
script.SetInput(input);
script.SetRadius(radius);
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
script.ForEach(output);
output.CopyTo(blurredBitmap);
output.Destroy();
input.Destroy();
script.Destroy();
return(blurredBitmap);
}
public void Show()
{
var obj = (Activity)Xamarin.Forms.Forms.Context;
var root = obj.Window.DecorView.FindViewById(Resource.Id.Content);
root.DrawingCacheEnabled = true;
var b = Bitmap.CreateBitmap(root.GetDrawingCache(true));
root.DrawingCacheEnabled = false;
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(b);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(obj);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, b, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Renderscripts.Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(25);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
dialog = new Dialog(obj, Resource.Style.ThemeNoTitleBar);
Drawable d = new BitmapDrawable(blurredBitmap);
dialog.Window.SetBackgroundDrawable(d);
dialog.Show();
}
Bitmap BlurImage(Bitmap input)
{
try {
var rsScript = RenderScript.Create(Context);
var alloc = Allocation.CreateFromBitmap(rsScript, input);
var blur = ScriptIntrinsicBlur.Create(rsScript, alloc.Element);
blur.SetRadius(12);
blur.SetInput(alloc);
var result = Bitmap.CreateBitmap(input.Width, input.Height, input.GetConfig());
var outAlloc = Allocation.CreateFromBitmap(rsScript, result);
blur.ForEach(outAlloc);
outAlloc.CopyTo(result);
rsScript.Destroy();
return(result);
} catch (Exception e) {
Log.Error("Blurrer", "Error while trying to blur, fallbacking. " + e.ToString());
return(input);
}
}
private bool Prepare()
{
int width = BlurredView.Width;
int height = BlurredView.Height;
if (blurringCanvas == null || downsampleFactorChanged || blurredViewWidth != width || blurredViewHeight != height)
{
downsampleFactorChanged = false;
blurredViewWidth = width;
blurredViewHeight = height;
int scaledWidth = width / downsampleFactor;
int scaledHeight = height / downsampleFactor;
scaledWidth = scaledWidth - scaledWidth % 4 + 4;
scaledHeight = scaledHeight - scaledHeight % 4 + 4;
if (blurredBitmap == null || blurredBitmap.Width != scaledWidth || blurredBitmap.Height != scaledHeight)
{
bitmapToBlur = Bitmap.CreateBitmap(scaledWidth, scaledHeight, Bitmap.Config.Argb8888);
if (bitmapToBlur == null)
{
return(false);
}
blurredBitmap = Bitmap.CreateBitmap(scaledWidth, scaledHeight, Bitmap.Config.Argb8888);
if (blurredBitmap == null)
{
return(false);
}
}
blurringCanvas = new Canvas(bitmapToBlur);
blurringCanvas.Scale(1f / downsampleFactor, 1f / downsampleFactor);
if (renderScript != null)
{
blurInput = Allocation.CreateFromBitmap(renderScript, bitmapToBlur, Allocation.MipmapControl.MipmapNone, Allocation.UsageScript);
blurOutput = Allocation.CreateTyped(renderScript, blurInput.Type);
}
}
return(true);
}
private void CreateBlurredImage(int radius)
{
// Load a clean bitmap and work from that.
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
if (blurredBmp != null)
{
blurredBmp.Recycle();
blurredBmp.Dispose();
blurredBmp = null;
}
// Create another bitmap that will hold the results of the filter.
blurredBmp = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(this);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, Allocation.UsageScript);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start Renderscript working.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBmp);
input.Destroy();
input.Dispose();
output.Destroy();
output.Dispose();
}
public Bitmap CreateBlurredImageoffline(Context contexto, int radius, int resid)
{
// Load a clean bitmap and work from that.
WallpaperManager wm = WallpaperManager.GetInstance(this);
Drawable d = wm.Drawable;
Bitmap originalBitmap;
originalBitmap = ((BitmapDrawable)d).Bitmap;
if (Build.VERSION.SdkInt >= BuildVersionCodes.JellyBeanMr1)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(contexto);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
else
{
return(originalBitmap);
}
}
public static Bitmap Blur(Context ctx, Bitmap image)
{
int width = (int)Math.Round(image.Width * BITMAP_SCALE);
int height = (int)Math.Round(image.Height * BITMAP_SCALE);
Bitmap inputBitmap = Bitmap.CreateScaledBitmap(image, width, height, false);
Bitmap outputBitmap = Bitmap.CreateBitmap(inputBitmap);
var rs = RenderScript.Create(ctx);
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
Allocation tmpIn = Allocation.CreateFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(rs, outputBitmap);
theIntrinsic.SetRadius(BLUR_RADIUS);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
private Bitmap CreateBlurredImage(int radius, Bitmap originalBitmap)
{
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
var rs = RenderScript.Create(Forms.Context);
var input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
script.SetInput(input);
script.SetRadius(radius);
script.ForEach(output);
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
public Bitmap FnBlurEffectToImage(Bitmap image)
{
if (image == null)
{
return(null);
}
Bitmap outputBitmap = Bitmap.CreateBitmap(image);
RenderScript renderScript = RenderScript.Create(this);
Allocation tmpIn = Allocation.CreateFromBitmap(renderScript, image);
Allocation tmpOut = Allocation.CreateFromBitmap(renderScript, outputBitmap);
//Intrinsic Gausian blur filter
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
theIntrinsic.SetRadius(10f);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
Bitmap CreateBlurredImage(int radius)
{
// Load a clean bitmap to work from.
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Load up an instance of the specific script that we want to use.
// An Element is similar to a C type. The second parameter, Element.U8_4,
// tells the Allocation is made up of 4 fields of 8 unsigned bits.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
// Create an Allocation for the kernel inputs.
Allocation input = Allocation.CreateFromBitmap(renderScript, originalBitmap,
Allocation.MipmapControl.MipmapFull,
AllocationUsage.Script);
// Assign the input Allocation to the script.
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Finally we need to create an output allocation to hold the output of the Renderscript.
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
// Next, run the script. This will run the script over each Element in the Allocation, and copy it's
// output to the allocation we just created for this purpose.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
// Cleanup.
output.Destroy();
input.Destroy();
script.Destroy();
return(blurredBitmap);
}
protected override Android.Graphics.Bitmap Transform(Android.Graphics.Bitmap source)
{
Bitmap outBitmap = Bitmap.CreateBitmap(source.Width, source.Height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(outBitmap);
canvas.DrawBitmap(source, 0, 0, null);
RenderScript rs = RenderScript.Create(mContext);
Allocation overlayAlloc = Allocation.CreateFromBitmap(rs, outBitmap);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.Create(rs, overlayAlloc.Element);
blur.SetInput(overlayAlloc);
blur.SetRadius(mRadius);
blur.ForEach(overlayAlloc);
overlayAlloc.CopyTo(outBitmap);
source.Recycle();
rs.Destroy();
return(outBitmap);
}
